REMOTE CONTROL SYSTEM OF ENGINE WITH REVERSE-REDUCTION GEAR DRIVE Russian patent published in 2005 - IPC

FIELD: mechanical engineering.

SUBSTANCE: invention relates to control systems of internal combustion engines with reverse-reduction gear drives installed on ships. Proposed engine remote control system contains local control station with handles of separate control of reverse-reduction gear drive and engine speed and it includes master control members of remote control station connected through converters to servos mechanically coupled with local control station handles and furnished with limit switches of fixed positions of servos. Input AND gates are provided with additional interlock inverting inputs connected to outputs of storage elements of other control pairs. In its power part, system is additional furnished with choke determining speed of operation of engine speed change servo converter placed in power in power channel parallel to choke and connected at remote stations of system to additional control member providing quick reduction engine speed. System is furnished with engine speed sensor with engine operation signaling and engine speed signaling channels preventing disconnection of reverse-reduction gear from engine power take-off shaft at idling and engine quick reversing unit containing two control channels: first channel for reversing engine at speed permitting disconnection of reverse-reduction gear drive and second channel for reversing engine at higher speed. Each channel contains pair of series-connected input AND gate connected by inputs to servo limit switches and to speed sensor signals and storage element connected by reset input to reverse drive limit switch. Output of each storage element is connected in parallel with output of quick speed reduction master member and to two pairs of series-connected AND gates and storage element. First pair forms idle shift-in channel and second pair in which time delay element is placed between output of AND gate and storage element recording input forms reverse shift-in channel. Signal of shifting engine to reverse thrust in first channel is connected to input AND gate of second pair before time delay element and in second channel, in second pair, after time delay element to additional AND gate connected by second input to idle signal and placed between output of time delay element and storage element output element recording input. Output of element of storage of first pair in each control channel is connected by output through OR gates to converters for connecting idle

drive, and output element of storage of second pair is connected by output through OR gates to converter for shifting-in reverse drive.

EFFECT: improved reliability and quick response of control system of engine with reverse reduction gear drive in multiple engine plant of ship.

2 cl, 1 dwg